Internal-combustion engine.



M www WM,

J. D. LOWE.

INTERNAL GOMBUSTION ENGINE. APPLICATION FILED JAN.13.1913.

1,102,675. Patented. July '2, 1914.

Smc/vwo@ @www .75A 77 O We, fW//f #5% THE NORRIS PETERS (7).PHOTU-LI'VHO. WASHINGTON. D. C

UNITED STATES PATENT OEE;

JOI-IN D. LOWE, OF INDIANAPOLIS, INDIANA, ASSIG-NOR TO THE F. W. SPAGKEMACHINE COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

IN TERNAL-COMBST'ION ENGINE.

Application filed January 13, 1913.

To all whom it may concern:

Be it known that I, Jol-IN D. Lowa, a subject of the King of GreatBritain and Ireland, residing at Indianapolis, in the county of Marionand State of Indiana, have invented a new and useful Internal-Combustion Engine, of which the following is a specification.

In the operation of explosion engines, especially motor cycle engines,great difficulty is frequently experienced by reason of the dust andgrit which settle on the exposed parts of the valve-operating mechanism,and especially on the valve stems and associated parts at the top of theengine cylinder, this dust and grit making it impossible to produceproper and lasting lubrication so that sticking of the parts isfrequent.

It is the object of my present invention to protect these parts, and atthe same time to provide suitablel means for lubricating them andconvenient means for primingthe engine.

The single figure of the drawing is a side elevation, partly in section,of a twin-cylinder engine embodying my invention, the parts of theengine save where my invention is applied being indicated merely indotted outline.

The engine shown has two cylinders 10 and 11, set at an angle to eachother on a common crank case 12. Each cylinder is provided with a valvechamber 13, in the upper end of which is mounted an inlet valve casing14 having an inwardly 0pening' valve l5 spring-pressed, by a spring 16,to its seat. The stem 17 of the valve 15 extends through a bushing 18threaded into the upper end of the valve casing 14 and clamping acap-piece 19 in place. This cap-piece is provided with a fuel inletpas'- sage 20, supplied from a carbureter 31, which fuel inlet passageextends to and surrounds the valve casing 14. It is also pro-` videdwith a cup 21, into which the valve stem 17 projects and in which ismounted a lever bearing against the end ofsaid valve stem and against asuitably operated valveoperating rod 23. The chamber 21 is closed by acover 24, removably held in place by thumb screws 25, the holes for thescrews 25 extending into the fuel inlet passage 20 Speciiication ofLetters Patent.

Patented July "Z, 1914i.

serial No. 741,724.

so that by removing a screw 25 ready access for priming is obtained. Asuitable lubricant, together with wicking or other lubricant holder ifdesired, may be placed in the chamber 21, and is prevented fromcontamination and evaporation by the cover 24, so that the inlet valvestem and its operating mechanism are always kept lubricated and areprotected from the dust and grit of the road.

I claim as my invention:

1. In an internal combustion engine, the combination of a valve chamber,an inlet valve opening thereinto and provided withl a stem, a cap-pieceprovided with a fuel supply passage and with a lubricant chamber intowhich the valve stem. projects, means located in said lubricant chamberfor transmitting motionto said valve stem, and a removable cover forsaid lubricant chamber. i

2. In an internal combustion engine, the combination of a valve chamber,an inlet valve opening thereinto and provided with a stem, a cap pieceprovided with a fuel supply passage and with a lubricant chamber intowhich the valve stem projects, means located in said lubricant chamberfor transmitting motion to said valve stem, a removable cover for saidlubricant chamber, and a screw for holding said cover in place, the holefor said screw extending into the fuel supply passage.

3. In an internal combustion engine, the combination of a valvechamberhaving a fuel supply passage and a-lubricantchamber, a valve between thevalve chamber and the fuel supply passage, means located in` thelubricant chamber for transmitting motion to said valve, a removablecover for said lubricant chamber, and a screw for holding said cover inplace, the hole for said screw communicating with the fuel supplypassage.

In witness whereof, I have hereunto set my hand at Indianapolis,Indiana, this tenth day of January, A. D. one lthousand nine hundred andthirteen.`

JOHN D. LOWE.

Witnesses:

DALMAR T. BROWNLEE, G. B. SOHLEY.

Copies o! this patent may be obtained for ve cents each,` by addressingthe` Commissioner ofjPatentl,

Washington, D. G.

